Valve assembly

Abstract

A valve assembly has a valve housing, an inlet, an outlet and a flow passage extending between the inlet and the outlet. A shut-off valve is mounted on the housing adjacent the inlet and a flow control valve is mounted on the housing adjacent the outlet. By mounting both valves on the same housing, the dimensions of the assembly are reduced.

1 . A valve assembly comprising a valve housing having an inlet, an outlet and a flow passage extending between the inlet and the outlet, and first and second valves mounted on the housing for controlling the flow of fluid through the flow passage. 
   
   
       2 . A valve assembly as claimed in  claim 1 , wherein one of the first and second valves comprises a valve closure member mounted on the valve housing and releasably engageable with a valve seat, the valve seat being formed on the valve housing. 
   
   
       3 . A valve assembly as claimed in  claim 1 , wherein one of the first and second valves comprises a valve closure member mounted on the valve housing and releasably engageable with a valve seat which is formed separately from the valve housing, the assembly further comprising means for attaching the valve seat to the valve housing. 
   
   
       4 . A valve assembly comprising a valve housing having an inlet, an outlet and a flow passage extending between the inlet and the outlet, and first and second valves for controlling the flow of fluid through the flow passage, each of the first and second valves comprising a valve closure member engageable with a valve seat, the valve closure members being mounted on the valve housing. 
   
   
       5 . A valve assembly as claimed in  claim 4 , wherein one of the first and second valves comprises a valve seat formed on the valve housing. 
   
   
       6 . A valve assembly as claimed in  claim 4 , wherein one of the first and second valves comprises a valve seat which is formed separately from the valve housing, the assembly further comprising means for attaching the valve seat to the valve housing. 
   
   
       7 . A valve assembly as claimed in  claim 1 , wherein one of the first and second valves is located adjacent to the inlet. 
   
   
       8 . A valve assembly as claimed in  claim 1 , wherein one of the first and second valves is located adjacent to the outlet. 
   
   
       9 . A valve assembly as claimed in  claim 1 , wherein one of the first and second valves comprises a shut-off valve. 
   
   
       10 . A valve assembly as claimed in  claim 1 , wherein one of the first and second valves comprises a regulating valve. 
   
   
       11 . A valve assembly as claimed in  claim 10 , wherein the regulating valve comprises a butterfly valve. 
   
   
       12 . A valve assembly as claimed in  claim 11 , wherein the butterfly valve is angularly displaceable through an obtuse angle. 
   
   
       13 . A valve assembly as claimed in  claim 2 , wherein the valve closure member is angularly displaceable through an angle whereby the normally innermost face of the face closure member faces downstream. 
   
   
       14 . A valve assembly as claimed in  claim 13 , wherein the valve closure member is displaced through an angle of approximately 160°. 
   
   
       15 . A valve assembly as claimed in  claim 10 , comprising means for temporarily securing the regulating valve in a predetermined position. 
   
   
       16 . A valve assembly as claimed in  claim 15 , comprising means for temporarily securing the regulating valve in one of a plurality of predetermined positions. 
   
   
       17 . A valve assembly as claimed in  claim 1 , wherein the flow passage is elongate. 
   
   
       18 . A valve assembly as claimed in  claim 17 , wherein the cross-sectional area of the flow passage is larger at the outlet than at the inlet. 
   
   
       19 . A valve assembly as claimed in  claim 1 , further comprising connection means for connecting the valve housing to the outlet of a source of fluid whose flow is to be controlled. 
   
   
       20 . A valve assembly as claimed in  claim 19 , wherein the connection means comprises a connection flange. 
   
   
       21 . A valve assembly as claimed in  claim 1 , wherein at least one of the first and second valves is operable manually. 
   
   
       22 . A valve assembly as claimed in  claim 21 , wherein said at least one manually operable valve is operated by means of a handle. 
   
   
       23 . A valve assembly as claimed in  claim 21 , wherein both of the first and second valves are operable manually. 
   
   
       24 . A valve assembly as claimed in  claim 23 , wherein both of the first and second manually operable valves are operated by means of a handle. 
   
   
       25 . (canceled)